Class: OdroidLCD::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/odroid_lcd/cli.rb

Instance Method Summary collapse

Constructor Details

#initialize(argv, mocks = {}) ⇒ CLI

Returns a new instance of CLI.



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# File 'lib/odroid_lcd/cli.rb', line 7

def initialize(argv, mocks = {})
  @options = parse_arguments(argv)
  @argv = argv

  # If we're testing via the command line, set the mock rather than LCD.
  @lcd = if @options[:test]
    @hw_mock = OdroidLCD::HWMock.new
    mock_hw = mocks.merge({odroidlcd_hw: @hw_mock})
    OdroidLCD::LCD.new(mocks: mock_hw)
  else
    OdroidLCD::LCD.new(mocks: mocks)
  end

  # set the default text alignment
  @align = @options[:align] || "left"

  freeze()
end

Instance Method Details

#parse_arguments(argv) ⇒ Object 



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# File 'lib/odroid_lcd/cli.rb', line 47

def parse_arguments(argv)
  options = {}
  OptionParser.new do |opts|
    opts.banner = "Usage: odroid-lcd [options] [first line] [second line]"

    opts.on("-f", "--file=FILE", String, "Read content from a file") do |x|
      if x == nil
        puts opts
        exit 2
      end
      options[:file] = x
    end

    opts.on("--test", "Dry run test (does not update the screen)") do |x|
      options[:test] = x
    end

    opts.on("--align=ALIGN", String, "Align text: left, right, center") do |x|
      if x == nil
        puts opts
        exit 2
      end
      options[:align] = x
    end

    opts.on("-h", "--help", "Prints this help") do
      puts opts
      exit
    end

  end.parse!
  options
end

#read_file(filename) ⇒ Object 



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# File 'lib/odroid_lcd/cli.rb', line 81

def read_file(filename)
  file = if (filename == '-')
    $stdin
  else
    File.open(filename, "r")
  end

  file.readlines.map {|line| line.chomp }
end

#run ⇒ Object 



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# File 'lib/odroid_lcd/cli.rb', line 27

def run
  lines = if @options.has_key?(:file)
    read_file(@options[:file])
  else
    @argv[0,2].map {|line| line.chomp }
  end

  @lcd.set_lines(lines: lines, align: @align)

  if @options[:test]
    show_mocked_lcd()
  end
end

#show_mocked_lcd ⇒ Object 



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# File 'lib/odroid_lcd/cli.rb', line 41

def show_mocked_lcd
  puts "[#{@hw_mock.get(row: 0).join}]"
  puts "[#{@hw_mock.get(row: 1).join}]"
end